/*
	Standards Compliant Rollover Script
	Author : Daniel Nolan
	Link : http://www.bleedingego.co.uk/webdev.php
	Notes : Add the attribute class="imgover" to any image in 
	your document that requires a mouseover effect to be triggered
	Also, for every image with this class you need to create a rollover state file
	with the name of the regular state plus '_o' at the end of the name. Like this...
	sample.jpg and sample_o.jpg and they should be on the same directory
*/

function initRollovers() {
	if (!document.getElementById) {return;}
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'imgover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_o'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) {sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);}
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}